News tagged with fluorescence
Going live: Immune cell activation in multiple sclerosis
Biological processes are generally based on events at the molecular and cellular level. To understand what happens in the course of infections, diseases or normal bodily functions, scientists would need to ...
Immunology
4 hours ago |
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Researchers analyse hunting behaviour of fish larvae in virtual reality
Moving objects attract greater attention – a fact exploited by video screens in public spaces and animated advertising banners on the Internet. For most animal species, moving objects also play a major ...
Neuroscience
May 22, 2013 |
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A novel surface marker helps scientists 'fish out' mammary gland stem cells
Stem cells are different from all other cells in our body because they retain the remarkable genetic plasticity to self-renew indefinitely as well as develop into cell types with more specialized functions. However, this ...
Cancer
Apr 11, 2013 |
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Retinoic acid gradient visualized for the first time in an embryo
In a ground-breaking study, researchers from the RIKEN Brain Science Institute in Japan report a new technique that allows them to visualize the distribution of retinoic acid in a live zebrafish embryo, in ...
Medical research
Apr 07, 2013 |
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New cancer detection and brain imaging techniques presented
A non-invasive imaging technique which may help in the earlier detection of cancer is among the innovative research being presented at BioPIC 2013, a BioPhotonics and Imaging Conference, taking place in Castleknock Hotel ...
Cancer
Mar 27, 2013 |
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Transplanted brain cells in monkeys light up personalized therapy
For the first time, scientists have transplanted neural cells derived from a monkey's skin into its brain and watched the cells develop into several types of mature brain cells, according to the authors of ...
Medical research
Mar 14, 2013 |
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No genetic clock for neuron longevity
(Medical Xpress)—People are living longer than ever before, thanks to medical and technological advances. Unfortunately, aging can be associated with a decrease in brain function. This is because, unlike ...
Neuroscience
Feb 27, 2013 |
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Researchers develop tool for reading the minds of mice (w/ Video)
(Medical Xpress)—If you want to read a mouse's mind, it takes some fluorescent protein and a tiny microscope implanted in the rodent's head.
Neuroscience
Feb 19, 2013 |
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5-ALA fluorescence guides resection of recurrent glioblastoma multiforme
Neurosurgeons from UC San Francisco describe the use of 5-aminolevulinic acid (5-ALA) fluorescence in guiding resection of recurrent glioblastoma multiforme (GBM). Ingestion of 5-ALA by a patient before surgery leads to fluorescence ...
Cancer
Feb 19, 2013 |
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The birth of new cardiac cells
Recent research has shown that there are new cells that develop in the heart, but how these cardiac cells are born and how frequently they are generated remains unclear. In new research from Brigham and Women's Hospital (BWH), ...
Cardiology
Dec 05, 2012 |
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Super-resolution microscope shows how human T-cells make life or death decisions
(Medical Xpress)—Using a super-resolution fluorescent microscope, medical scientists are a step closer to understanding why and how human immune cells decide to activate or not, thus enabling or preventing ...
Immunology
Dec 03, 2012 |
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Calcium reveals connections between neurons
A team led by MIT neuroscientists has developed a way to monitor how brain cells coordinate with each other to control specific behaviors, such as initiating movement or detecting an odor.
Neuroscience
Oct 17, 2012 |
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Learning requires rhythmical activity of neurons
The hippocampus represents an important brain structure for learning. Scientists at the Max Planck Institute of Psychiatry in Munich discovered how it filters electrical neuronal signals through an input ...
Neuroscience
Sep 26, 2012 |
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Could compact fluorescent bulbs pose skin cancer risk?
(HealthDay) -- As the United States bakes under the summer sun, dermatologists often warn of cancer risks posed by ultraviolet (UV) sunlight. But research now points to a new and ubiquitous indoor source of the ...
Cancer
Aug 03, 2012 |
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Study reveals harmful effects of compact fluorescent light bulbs to skin
(Medical Xpress) -- Inspired by a European study, a team of Stony Brook University researchers looked into the potential impact of healthy human skin tissue (in vitro) being exposed to ultraviolet rays emitted ...
Health
Jul 19, 2012 |
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Fluorescence
Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation of a different wavelength. It is a form of luminescence. In most cases, emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation. However, when the absorbed electromagnetic radiation is intense, it is possible for one electron to absorb two photons; this two-photon absorption can lead to emission of radiation having a shorter wavelength than the absorbed radiation.
The most striking examples of fluorescence occur when the absorbed radiation is in the ultraviolet region of the spectrum, and thus invisible to the human eye, and the emitted light is in the visible region.
Fluorescence has many practical applications, including mineralogy, gemology, chemical sensors (fluorescence spectroscopy), fluorescent labelling, dyes, biological detectors, and, most commonly, fluorescent lamps.
For more information about Fluorescence, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
